Harmless sludge degradation equipment and method

Abstract

The invention discloses sludge harmless degradation equipment and a sludge harmless degradation method. The equipment comprises a pretreatment assembly, a combined degradation assembly and a dehydration assembly, the pretreatment assembly comprises a pretreatment box, a homogenizing plate and a pushing motor for providing power for the homogenizing plate; the combined degradation assembly comprises a degradation box, a dissolved air tank, a fishing component, a lifting motor and a first sludge pump; the dewatering assembly comprises a dewatering box, an extrusion component, a linkage component, a first electric push rod and a second sludge pump; the equipment disclosed by the invention is reasonable in structural design, and harmless and reduction treatment of the sludge is realized by carrying out microbial degradation, chemical oxidation combined treatment and mechanical dehydration treatment on the sludge; meanwhile, the used microbial agent and oxidant do not cause secondary pollution of the sludge, and compared with traditional sludge treatment equipment, the method has the advantages of mild degradation condition, safety and high efficiency, and is suitable for popularization and application.

Description

Technical Field

[0001] The invention relates to the technical field of sludge treatment, and in particular to a sludge harmless degradation device and a method thereof. Background Art

[0002] Sludge harmless treatment refers to the process of subjecting the sludge generated during sewage treatment to a series of physical, chemical or biological treatments to reduce its volume, mitigate or eliminate its potential hazards, and ultimately achieve resource utilization. At present, the work on sludge harmless treatment is mainly focused on improving the harmless disposal rate, promoting resource utilization technology, and establishing a relevant standard system. Emerging sludge treatment technologies, such as two-stage drying + pyrolysis gasification process, are being applied to sludge disposal projects. Sludge harmless treatment is developing rapidly in the direction of improving disposal rates, promoting resource utilization technology, and establishing a standard system to achieve the dual goals of environmental protection and sustainable resource utilization.

[0003] In the prior art, the methods for harmless treatment of sludge mainly include solvent extraction, hot water washing, thermal decomposition, ultrasonic deoiling technology and biological treatment technology. However, the above methods all have shortcomings. The solvent extraction technology requires a large amount of extractant and is costly, and the solvent recovery process consumes a lot of energy; the hot water washing technology will produce secondary pollution; the thermal decomposition technology has high energy consumption and complex operation; the current biological treatment technology is time-consuming and cannot recycle useful resources for reuse. Summary of the invention

[0004] In view of the above-mentioned technical problems, the present invention provides a sludge harmless degradation device and method.

[0005] The technical solution of the present invention is: a sludge harmless degradation device, comprising a pretreatment component, a combined degradation component connected to the pretreatment component, and a dehydration component connected to the combined degradation component; the pretreatment component comprises a pretreatment box, a homogenizing plate slidably connected to the inside of the pretreatment box, and a driving motor arranged at the top of the pretreatment box and providing power for the homogenizing plate; The combined degradation component includes a degradation box, an air dissolving tank arranged at the bottom of the degradation box, a salvaging component arranged at the top of the degradation box, a lifting motor arranged at the top of the degradation box and providing lifting power for the salvaging component, and a first sludge pump arranged on the outer wall of the degradation box and connected to the pretreatment box and the degradation box respectively; a partition is arranged at the lower end of the degradation box; a plurality of air dissolving nozzles are evenly distributed on the partition; the air dissolving tank is connected to each air dissolving nozzle at the same time through a conduit; The dehydration assembly includes a dehydration box, an extrusion member and a linkage member arranged inside the dehydration box, a first electric push rod arranged on the outer wall of the dehydration box and providing power for the linkage member, and a second sludge pump arranged on the top of the degradation box and connected to the degradation box and the extrusion member respectively.

[0006] Furthermore, a water inlet flange is arranged on the outer wall of the pretreatment box; a plurality of through grooves are arranged through the homogenizing plate, and two threaded seats are arranged at the top of the homogenizing plate, respectively penetrating the pretreatment box and respectively slidingly engaging with the pretreatment box; two movable lead screws are rotatably engaged with the two threaded seats at the top of the pretreatment box through the vertical plate; the two movable lead screws are respectively threadedly connected with the two threaded seats in a one-to-one correspondence, and small sprockets are arranged at the ends of the two movable lead screws; the output end of the driving motor is connected with a main sprocket, and the main sprocket is connected to the two small sprockets through a chain transmission; The upper end surface of the outer wall of the degradation tank is provided with a sewage hopper and the top end is provided with a dosing pipe; the input end of the first sludge pump is connected with the lower end of the pretreatment tank through a conduit, and the output end of the first sludge pump is connected with the upper end of the degradation tank through a conduit; The lower end of the outer wall of the dehydration box is provided with a mud discharge port and a water discharge port; the input end of the second sludge pump is connected with the lower end of the degradation box through a conduit, and the output end of the second sludge pump is connected with the inside of the extrusion component through a conduit.

[0007] Furthermore, several connecting shafts are arranged in parallel in the middle of the homogenizing plate, each connecting shaft is sleeved with a connecting gear located inside the homogenizing plate, and both ends of each connecting shaft are provided with a rotating net cylinder; each rotating net cylinder is provided with a crushing knife, and a collecting trough is provided on the rotating net cylinder and at the connection between the crushing knife and the rotating net cylinder; a follower seat is provided at the top of the homogenizing plate, which passes through the pretreatment box and is slidably engaged with the pretreatment box; a pushing rack is provided on the follower seat, which is slidably engaged with the inner wall of the homogenizing plate and is meshed with each connecting gear; an auxiliary motor is provided on the follower seat, and an eccentric turntable is connected to the output end of the auxiliary motor, and the eccentric turntable and the top end of the pushing rack are movably hinged through a hinge rod; a sealing door is clamped on the outer wall of the pretreatment box; Description: During the movement of the homogenizing plate, the auxiliary motor is used to drive the eccentric turntable to rotate. At this time, the push rack reciprocates along the inner wall of the homogenizing plate under the joint action of the hinged rod and the eccentric turntable. Each connecting shaft reciprocates under the meshing action of the connecting gear and the push rack, and drives the corresponding rotating net cylinder to reciprocate. When the rotating net cylinder rotates, the crushing knife is used to crush the large particles in the sludge to reduce the difficulty of subsequent sludge treatment. At the same time, the insoluble substances in the sludge enter the inside of the rotating net cylinder through the collection groove on the rotating net cylinder, and finally the insoluble substances collected in the rotating net cylinder are transferred through the sealing door.

[0008] Furthermore, the salvage component includes a salvage frame, a porous plate assembly movably arranged at the bottom of the salvage frame, and a second electric push rod arranged inside the salvage frame and providing power for the porous plate assembly; a transfer hole is arranged on the side wall of the salvage frame and at a position corresponding to the position of the sewage bucket, a fixed plate is arranged at the center position of the bottom of the salvage frame, and a threaded sleeve is arranged on the fixed plate; there are several porous plate assemblies, which are evenly distributed on both sides of the fixed plate; each porous plate assembly is composed of two movable porous plates, and the sides of the two movable porous plates close to each other are movably hinged by a T-plate, and the two movable porous plates located at the two ends are respectively slidably engaged with the inner side wall of the salvage frame; a pushing beam connected to each T-plate at the same time is arranged inside the salvage frame; the second electric push rod is connected to the lower bottom surface of the pushing beam; the output end of the lifting motor is connected to a lifting screw that penetrates the degradation box and is threadedly connected to the threaded sleeve; Description: The lifting motor is used to drive the lifting screw to rotate, and the salvage frame moves up and down along the inner wall of the degradation box under the joint action of the threaded sleeve and the lifting screw; during the descent of the salvage frame, the second electric push rod is used to drive the push beam to move upward, at which time the two movable porous plates connected by the T-plate approach each other to open the bottom of the salvage frame; during the ascent of the salvage frame, the second electric push rod is used to drive the push beam to move downward, at which time the movable porous plate closes the bottom of the salvage frame, and the movable porous plate is used to block the pollutants floating on the sludge surface; during the movement of the salvage frame, the uniformity of the mixing of microbial agents, oxidants and sludge can also be promoted.

[0009] Furthermore, a scraper is slidably connected to the bottom of the degradation box, a U-shaped frame connected to the scraper is slidably connected to the outer wall of the degradation box, and a third electric push rod connected to the U-shaped frame is arranged on the outer wall of the degradation box; Description: The third electric push rod is used to push the U-shaped frame to move. At this time, the scraper moves inside the degradation box to scrape off the pollutants salvaged from the bottom of the salvage frame, which is beneficial to improving the working continuity of the salvage components.

[0010] Furthermore, the extrusion component includes two extrusion boxes symmetrically arranged inside the dehydration box and extrusion plates movably connected to the two extrusion boxes one by one; one end of the extrusion box is open, and the other end is provided with a dehydration mesh plate, the open ends of the two extrusion boxes are close to each other, and the two extrusion plates are slidably connected to the open ends of the two extrusion boxes one by one; the output end of the second sludge pump is connected to the inside of the extrusion box through a conduit; Description: When in use, the linkage component is used to push the two extrusion plates away from each other to squeeze the sludge inside the two extrusion boxes. The moisture in the sludge passes through the dewatering mesh plate and is discharged through the drain port. The dehydrated sludge is discharged through the sludge discharge port, realizing the sludge reduction treatment.

[0011] Further, a linkage component is arranged between the two extrusion plates, and the linkage component includes a rotating rod and a pushing rod; two rotating rods and two pushing rods are provided, and the center positions of the two rotating rods are hinged to each other and are rotatably engaged with the inner wall of the dehydration box; the two pushing rods are respectively located on both sides of the hinge points of the two rotating rods, and are respectively slidably engaged with the two rotating rods in a one-to-one correspondence; the side walls of the two pushing rods are provided with an extension seat that penetrates the dehydration box and is slidably engaged with the dehydration box; two first electric push rods are provided, and the two first electric push rods are respectively connected to the two extension seats in a one-to-one correspondence; Description: When in use, the two first electric push rods are used to push the corresponding extension seats closer to each other. At this time, the two push rods are close to each other, so that the two rotating rods are opened to each other and the two extrusion plates are pushed away from each other.

[0012] Furthermore, rollers are rotatably engaged at the ends of the two rotating rods; Note: By arranging a roller on the rotating rod, it is helpful to reduce the friction resistance between the rotating rod and the extrusion plate, and reduce the power loss of the first electric push rod.

[0013] Furthermore, a plurality of extrusion members are provided, each of which is arranged in parallel inside the dehydration box, and the number of linkage members corresponds to the number of extrusion members; each extension seat is connected by a sliding beam, and the first electric push rod is connected to the sliding beam at the corresponding position; Description: By setting up multiple extrusion components, it is convenient to disperse and dehydrate the sludge, which reduces the difficulty of dehydrating the sludge that is piled up together, and also reduces the energy consumption of the equipment.

[0014] The present invention also provides a method for harmless degradation of sludge, based on the above-mentioned harmless degradation equipment of sludge, comprising the following steps: S1. The sludge to be treated is passed into the pretreatment box, and clean water is injected into the pretreatment box to adjust the sludge moisture content to 45-55%; then the homogenizing plate is driven by the push motor to move back and forth inside the pretreatment box, and the sludge is stirred by the homogenizing plate to improve the fluidity of the sludge; S2, using the first sludge pump to introduce the sludge in the pretreatment tank into the degradation tank, injecting the microbial agent into the degradation tank, and using the air dissolving tank to inject the flotation water into the sludge through the air dissolving nozzle, so that bubbles moving upward are generated in the sludge; the oily pollutants in the sludge move to the sludge liquid surface under the action of the bubbles, and the oily pollutants are salvaged and collected by using the salvage component; the microbial agent diffuses into the sludge under the action of the flotation water, and the hydrocarbon pollutants in the sludge are decomposed by the microbial agent; wherein the microbial agent is prepared by mixing Microbacterium phylloides, Pseudomonas putida, and Microbacterium stutzeri in a volume ratio of 1:1:2, and the dosage of the microbial agent is 0.005~0.009mg / L; S3. Inject an oxidant into the degradation tank. The oxidant diffuses into the sludge under the action of the flotation water to oxidize and decompose the pollutants in the sludge. The oxidant is a hydrogen peroxide solution with a volume concentration of 15-20%, and the dosage of the oxidant is 0.01-0.04 ml / L. S4. Use the second sludge pump to guide the sludge inside the degradation box into the extrusion component, use the first electric push rod to drive the linkage component, and use the linkage component to make the extrusion component move to extrude and dehydrate the sludge.

[0015] Compared with the prior art, the beneficial effects of the present invention are embodied in the following aspects: First, the present invention achieves harmless and reduced sludge treatment by subjecting the sludge to microbial degradation, chemical oxidation and mechanical dehydration treatment. At the same time, the microbial agents and oxidants used in the present invention will not cause secondary pollution to the sludge. Compared with traditional sludge treatment equipment, the present invention has the advantages of mild treatment conditions, safety and high efficiency. Second, the present invention utilizes the principle of air flotation, which can not only improve the diffusion uniformity of microbial agents and oxidants in the sludge, but also enable the oily pollutants in the sludge to be discharged along with the bubbles, thereby reducing the difficulty of sludge treatment and improving the treatment efficiency; Third, the present invention pre-treats the sludge through the pre-treatment component, which can crush the large particle impurities in the sludge, effectively improve the fluidity of the sludge, and lay the foundation for the microbiological, chemical and dehydration treatment of the sludge; at the same time, during the pre-treatment process, the insoluble substances in the sludge are collected and discharged, reducing the difficulty of subsequent sludge treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a longitudinal sectional view of the apparatus of the present invention; Figure 2 is a front view of the device of the present invention; Figure 3 is a top view of the apparatus of the present invention; Figure 4 The present invention Figure 1 A local enlarged schematic diagram of the middle A; Figure 5 The present invention Figure 3 A partial enlarged schematic diagram of point B in the middle; Figure 6 It is a schematic diagram of the connection between the connecting shaft and the homogenizing plate of the present invention; Figure 7 It is a distribution diagram of the crushing knives of the present invention on the rotating net cylinder; Figure 8 It is a schematic diagram of the connection between the auxiliary motor and the driving rack of the present invention; Fig. 9It is a schematic diagram of the connection between the salvage frame and the lifting motor of the present invention; Fig.10 It is a structural schematic diagram of the salvage component of the present invention; Fig.11 It is a distribution diagram of the movable porous plate of the present invention on the salvage frame; Fig.12 It is a schematic structural diagram of the linkage component of the present invention; Among them, 1-pretreatment component, 10-pretreatment box, 100-water inlet flange, 101-vertical plate, 11-homogeneous plate, 110-through groove, 111-threaded seat, 112-follow-up seat, 12-driving motor, 120-main sprocket, 13-moving screw, 130-small sprocket, 14-connecting shaft, 140-connecting gear, 141-rotating net cylinder, 1410-collecting tank, 142-crushing knife, 15-driving rack, 16-auxiliary motor, 160-eccentric turntable, 161-hinged rod, 17-sealed door, 2-joint degradation component, 20-degradation box, 200-drain bucket, 201-dosing pipe, 202-partition, 21-dissolving tank, 210-dissolving nozzle, 22-salvage component, 220-salvage frame, 22 00-transfer hole, 221-porous plate assembly, 2210-movable porous plate, 2211-T-plate, 2212-pushing beam, 222-second electric push rod, 223-fixed plate, 2230-threaded sleeve, 23-lifting motor, 230-lifting screw, 24-first sludge pump, 25-scraper, 250-U-shaped frame, 251-third electric push rod, 3-dehydration assembly, 30-dehydration box, 300-sludge outlet, 301-drainage outlet, 31-extrusion component, 310-extrusion box, 311-extrusion plate, 312-dehydration mesh plate, 32-linkage component, 320-rotating rod, 3200-roller, 321-pushing rod, 322-extension seat, 323-sliding beam, 33-first electric push rod, 34-second sludge pump. DETAILED DESCRIPTION

[0017] Example 1: Figure 1 , Figure 3 , Figure 5The sludge harmless degradation equipment shown in the figure comprises a pretreatment component 1, a combined degradation component 2 connected to the pretreatment component 1 and a dehydration component 3 connected to the combined degradation component 2; the pretreatment component 1 comprises a pretreatment box 10, a homogenizing plate 11 slidably connected to the inside of the pretreatment box 10 and a driving motor 12 arranged at the top of the pretreatment box 10 and providing power for the homogenizing plate 11; a water inlet flange 100 is arranged on the outer wall of the pretreatment box 10; a plurality of through grooves 110 are penetrated on the homogenizing plate 11, and a homogenizing plate 11 is provided with a plurality of through grooves 110 ... Two threaded seats 111 are provided at the top of the plate 11, which respectively penetrate the pretreatment box 10 and are respectively slidably engaged with the pretreatment box 10; two movable lead screws 13 are rotatably engaged with the top of the pretreatment box 10 through the vertical plate 101; the two movable lead screws 13 are respectively threadedly connected with the two threaded seats 111 in a one-to-one correspondence, and small sprockets 130 are provided at the ends of the two movable lead screws 13; the output end of the driving motor 12 is connected to the main sprocket 120, and the main sprocket 120 and the two small sprockets 130 are connected through chain transmission; like Figure 1 , Figure 2 , Figure 3 As shown, the combined degradation component 2 includes a degradation box 20, a dissolved gas tank 21 arranged at the bottom of the degradation box 20, a salvage member 22 arranged at the top of the degradation box 20, a lifting motor 23 arranged at the top of the degradation box 20 and providing lifting power for the salvage member 22, and a first sludge pump 24 arranged on the outer wall of the degradation box 20 and connected with the pretreatment box 10 and the degradation box 20 respectively; a sewage hopper 200 is arranged on the upper end surface of the outer wall of the degradation box 20, and a dosing pipe 201 is arranged on the top; a partition 202 is arranged at the lower end of the degradation box 20; a plurality of dissolved gas nozzles 210 are evenly distributed on the partition 202; the dissolved gas tank 21 is connected to each dissolved gas nozzle 210 at the same time through a conduit; the input end of the first sludge pump 24 is connected to the lower end of the pretreatment box 10 through a conduit, and the output end of the first sludge pump 24 is connected to the upper end of the degradation box 20 through a conduit; the salvage member 22 is a prior art; like Figure 1 , Figure 2 As shown, the dehydration assembly 3 includes a dehydration box 30, an extrusion member 31 and a linkage member 32 arranged inside the dehydration box 30, a first electric push rod 33 arranged on the outer wall of the dehydration box 30 and providing power for the linkage member 32, and a second sludge pump 34 arranged at the top of the degradation box 20 and connected with the degradation box 20 and the extrusion member 31 respectively; a sludge discharge port 300 and a water discharge port 301 are arranged at the lower end of the outer wall of the dehydration box 30; the input end of the second sludge pump 34 is connected with the lower end of the interior of the degradation box 20 through a conduit, and the output end of the second sludge pump 34 is connected with the interior of the extrusion member 31 through a conduit, wherein the extrusion member 31 and the linkage member 32 are both prior arts.

[0018] Example 2: This example describes a method for harmless degradation of sludge, based on a sludge harmless degradation device of Example 1, comprising the following steps: S1. The sludge to be treated is introduced into the pretreatment box 10 through the water inlet flange 100, and clean water is injected into the pretreatment box 10 to adjust the sludge moisture content to 45%; then the main sprocket 120 is driven to rotate by the driving motor 12, and the small sprocket 130 drives the moving screw 13 to rotate, and the connection between the threaded seat 111 and the moving screw 13 is used to make the homogenizing plate 11 reciprocate inside the pretreatment box 10, and the homogenizing plate 11 is used to stir the sludge to improve the fluidity of the sludge; S2, using the first sludge pump 24 to introduce the sludge in the pretreatment box 10 into the degradation box 20, injecting the microbial agent into the degradation box 20 through the dosing pipe 201, and using the air dissolving tank 21 to inject the flotation water into the sludge through the air dissolving nozzle 210, so that bubbles moving upward are generated in the sludge; the oily pollutants in the sludge move to the sludge liquid surface under the action of the bubbles, and the oily pollutants are salvaged and collected by the salvage component 22; and the pollutants collected by the salvage component 22 are discharged through the sewage hopper 200; the microbial agent diffuses into the sludge under the action of the flotation water, and the hydrocarbon pollutants in the sludge are decomposed by the microbial agent; wherein the microbial agent is prepared by mixing Microbacterium phylloides, Pseudomonas putida, and Microbacterium stutzeri in a volume ratio of 1:1:2, and the dosage of the microbial agent is 0.005 mg / L; S3, injecting an oxidant into the degradation box 20 through the dosing pipe 201, the oxidant diffuses into the sludge under the action of the flotation water, and oxidizes and decomposes the pollutants in the sludge; wherein the oxidant is hydrogen peroxide with a volume concentration of 15%, and the dosage of the oxidant is 0.01 ml / L; S4. The sludge in the degradation box 20 is introduced into the extrusion member 31 by the second sludge pump 34. The linkage member 32 is driven by the first electric push rod 33. The extrusion member 31 is moved by the linkage member 32 to extrude and dehydrate the sludge. The water removed from the sludge is discharged through the drainage port 301, and the dehydrated sludge is discharged through the sludge discharge port 300.

[0019] Example 3: This example describes a method for harmless degradation of sludge, which is based on a sludge harmless degradation device of Example 1, and differs from Example 2 in that: In step S1, the sludge moisture content is adjusted to 55%; In step S2, the dosage of the microbial agent is 0.009 mg / L; In step S3, the oxidant is hydrogen peroxide with a volume concentration of 20%, and the dosage of the oxidant is 0.04 ml / L.

[0020] Embodiment 4: This embodiment differs from Embodiment 1 in that Figure 1 , Figure 2 , Figure 4 , Figure 6 , Figure 7 , Figure 8 As shown, 13 connecting shafts 14 are arranged in parallel in the middle of the homogenizing plate 11, each connecting shaft 14 is sleeved with a connecting gear 140 located inside the homogenizing plate 11, and both ends of each connecting shaft 14 are provided with a rotating net cylinder 141; each rotating net cylinder 141 is provided with a crushing knife 142, and a collecting tank 1410 is provided on the rotating net cylinder 141 and at the connection between the crushing knife 142 and the rotating net cylinder 141; the top of the homogenizing plate 11 is provided with a pre-treatment box 10 A follower seat 112 is slidably engaged with the pretreatment box 10; a pushing rack 15 is provided on the follower seat 112, which is slidably engaged with the inner wall of the homogenizing plate 11 and is meshed with each connecting gear 140; an auxiliary motor 16 is provided on the follower seat 112, and an eccentric turntable 160 is connected to the output end of the auxiliary motor 16, and the eccentric turntable 160 and the top of the pushing rack 15 are movably hinged through a hinge rod 161; a sealing door 17 is clamped on the outer wall of the pretreatment box 10.

[0021] Example 5: This example describes a method for harmless degradation of sludge, which is based on a sludge harmless degradation device of Example 4, and differs from Example 2 in that: In step S1, during the movement of the homogenizing plate 11, the auxiliary motor 16 is used to drive the eccentric turntable 160 to rotate. At this time, the push rack 15 moves back and forth along the inner wall of the homogenizing plate 11 under the joint action of the hinged rod 161 and the eccentric turntable 160, and each connecting shaft 14 reciprocates under the meshing action of the connecting gear 140 and the push rack 15, and drives the corresponding rotating net cylinder 141 to reciprocate; when the rotating net cylinder 141 rotates, the crushing knife 142 is used to crush the large particles of debris in the sludge; at the same time, the insoluble substances in the sludge enter the interior of the rotating net cylinder 141 through the collecting groove 1410 on the rotating net cylinder 141, and finally the insoluble substances collected in the rotating net cylinder 141 are transferred through the sealing door 17.

[0022] Embodiment 6: This embodiment is different from Embodiment 4 in that 20 connecting shafts 14 are provided.

[0023] Embodiment 7: This embodiment differs from Embodiment 4 in that Figure 1 , Fig. 9 , Fig.10 , Fig.11As shown, the salvage component 22 includes a salvage frame 220, a porous plate assembly 221 movably arranged at the bottom of the salvage frame 220, and a second electric push rod 222 arranged inside the salvage frame 220 and providing power for the porous plate assembly 221; a transfer hole 2200 is arranged on the side wall of the salvage frame 220 and at a position corresponding to the position of the sewage bucket 200, a fixed plate 223 is arranged at the center of the bottom of the salvage frame 220, and a threaded sleeve 2230 is arranged on the fixed plate 223; 4 porous plate assemblies 221 are arranged and evenly distributed on both sides of the fixed plate 223; each porous plate assembly 221 is composed of two movable porous plates 2210, and the two movable porous plates 2210 are arranged on the fixed plate 223. The sides of 210 that are close to each other are movably hinged by a T-plate 2211, and the two movable porous plates 2210 located at both ends are respectively slidably engaged with the inner wall of the salvage frame 220; a pushing beam 2212 connected to each T-plate 2211 is arranged inside the salvage frame 220; the second electric push rod 222 is connected to the lower bottom surface of the pushing beam 2212; the output end of the lifting motor 23 is connected to a lifting screw 230 that penetrates the degradation box 20 and is threadedly connected to the threaded sleeve 2230; during the movement of the salvage frame 220, not only can the pollutants floating on the sludge surface be collected, but also the uniformity of the mixing of the microbial agent, the oxidant and the sludge can be promoted.

[0024] Example 8: This example describes a method for harmless degradation of sludge, which is based on a sludge harmless degradation device of Example 7, and differs from Example 5 in that: In step S2, the specific working principle of the salvage component 22 is: the lifting motor 23 is used to drive the lifting screw 230 to rotate, and the salvage frame 220 moves up and down along the inner wall of the degradation box 20 under the joint action of the threaded sleeve 2230 and the lifting screw 230; during the descent of the salvage frame 220, the second electric push rod 222 is used to drive the push beam 2212 to move upward. At this time, the two movable porous plates 2210 connected by the T-shaped plate 2211 are close to each other, and the bottom of the salvage frame 220 is opened; during the ascent of the salvage frame 220, the second electric push rod 222 is used to drive the push beam 2212 to move downward. At this time, the movable porous plate 2210 closes the bottom of the salvage frame 220, and the movable porous plate 2210 is used to block the pollutants floating on the sludge surface.

[0025] Embodiment 9: This embodiment is different from Embodiment 7 in that six porous plate assemblies 221 are provided.

[0026] Embodiment 10: This embodiment differs from Embodiment 7 in that Figure 3 , Fig. 9 As shown, a scraper 25 is slidably connected to the bottom of the degradation box 20, a U-shaped frame 250 connected to the scraper 25 is slidably connected to the outer wall of the degradation box 20, and a third electric push rod 251 connected to the U-shaped frame 250 is provided on the outer wall of the degradation box 20.

[0027] Example 11: This example describes a method for harmless degradation of sludge, which is based on a sludge harmless degradation device of Example 10, and differs from Example 8 in that: In step S2, when the salvage frame 220 moves to the top of the degradation box 20, the third electric push rod 251 is used to push the U-shaped frame 250 to move. At this time, the scraper 25 moves inside the degradation box 20 to scrape the pollutants salvaged from the bottom of the salvage frame 220, and the scraped pollutants are discharged through the sewage hopper 200.

[0028] Embodiment 12: This embodiment differs from Embodiment 10 in that Figure 1 As shown, the extrusion component 31 includes two extrusion boxes 310 symmetrically arranged inside the dewatering box 30 and extrusion plates 311 respectively and movably connected to the two extrusion boxes 310; one end of the extrusion box 310 is open, and the other end is provided with a dewatering mesh plate 312. The open ends of the two extrusion boxes 310 are close to each other, and the two extrusion plates 311 are respectively and slidably connected to the open ends of the two extrusion boxes 310; the output end of the second sludge pump 34 is connected to the inside of the extrusion box 310 through a conduit.

[0029] Example 13: This example describes a method for harmless degradation of sludge, which is based on a sludge harmless degradation device of Example 12, and differs from Example 11 in that: In step S4, the first electric push rod 33 is used to drive the linkage component 32, and the linkage component 32 is used to push the two extrusion plates 311 away from each other, so as to squeeze the sludge inside the two extrusion boxes 310, and the moisture in the sludge passes through the dewatering mesh plate 312 and is discharged through the drain port 301, and the dehydrated sludge is discharged through the sludge discharge port 300.

[0030] Embodiment 14: This embodiment differs from Embodiment 12 in that Figure 1 , Figure 2 , Fig.12 As shown, the linkage member 32 is arranged between the two extrusion plates 311, and the linkage member 32 includes a rotating rod 320 and a pushing rod 321; two rotating rods 320 and two pushing rods 321 are each provided, and the center positions of the two rotating rods 320 are hinged to each other and rotatably engaged with the inner wall of the dehydration box 30; the two pushing rods 321 are respectively located on both sides of the hinge points of the two rotating rods 320, and are respectively slidably engaged with the two rotating rods 320 in a one-to-one correspondence; the side walls of the two pushing rods 321 are each provided with an extension seat 322 that penetrates the dehydration box 30 and is slidably engaged with the dehydration box 30; two first electric push rods 33 are provided, and the two first electric push rods 33 are respectively connected to the two extension seats 322 in a one-to-one correspondence; the ends of the two rotating rods 320 are rotatably engaged with rollers 3200.

[0031] Example 15: This example describes a method for harmless degradation of sludge, which is based on a sludge harmless degradation device of Example 14, and differs from Example 13 in that: In step S4, the two first electric push rods 33 are used to push the corresponding extension seats 322 closer to each other. At this time, the two push rods 321 are closer to each other, so that the two rotating rods 320 are opened to each other and the two extrusion plates 311 are pushed away from each other.

[0032] Embodiment 16: This embodiment differs from Embodiment 14 in that Figure 1 , Figure 2 As shown, three extrusion members 31 are provided, and each extrusion member 31 is arranged in parallel inside the dehydration box 30, and the number of linkage members 32 corresponds to the number of extrusion members 31; each extension seat 322 is connected by a sliding beam 323, and the first electric push rod 33 is connected to the sliding beam 323 at the corresponding position.

[0033] Example 17: This example describes a method for harmless degradation of sludge, which is based on a sludge harmless degradation device of Example 16, and differs from Example 15 in that: In step S4, the second sludge pump 34 is used to introduce the sludge inside the degradation box 20 into each squeezing box 310 respectively, and the first electric push rod 33 is used to push the sliding beam 323 at the corresponding position to move, so that each linkage component 32 is started at the same time, and the sludge inside each squeezing box 310 is squeezed and dehydrated.

[0034] Embodiment 18: This embodiment is different from Embodiment 16 in that four pressing members 31 are provided.

[0035] It should be noted that the driving motor 12, auxiliary motor 16, dissolved air tank 21, dissolved air nozzle 210, second electric push rod 222, lifting motor 23, first sludge pump 24, third electric push rod 251, first electric push rod 33 and second sludge pump 34 used in the present invention all adopt existing technologies, and no special limitations are made here. The corresponding products can be selected according to actual needs.

Claims

1. A sludge harmless degradation device, characterized in that: The invention comprises a pretreatment component (1), a combined degradation component (2) connected to the pretreatment component (1), and a dehydration component (3) connected to the combined degradation component (2); the pretreatment component (1) comprises a pretreatment box (10), a homogenizing plate (11) slidably engaged inside the pretreatment box (10), and a driving motor (12) arranged at the top of the pretreatment box (10) and providing power to the homogenizing plate (11); The combined degradation component (2) comprises a degradation box (20), an air dissolving tank (21) arranged at the bottom of the degradation box (20), a salvaging member (22) arranged at the top of the degradation box (20), a lifting motor (23) arranged at the top of the degradation box (20) and providing lifting power for the salvaging member (22), and a first sludge pump (24) arranged on the outer wall of the degradation box (20) and connected to the pretreatment box (10) and the degradation box (20) respectively; a partition (202) is arranged at the lower end of the interior of the degradation box (20); a plurality of air dissolving nozzles (210) are evenly distributed on the partition (202); the air dissolving tank (21) is simultaneously connected to each of the air dissolving nozzles (210) via a conduit; The dehydration assembly (3) comprises a dehydration box (30), an extrusion member (31) and a linkage member (32) arranged inside the dehydration box (30), a first electric push rod (33) arranged on the outer side wall of the dehydration box (30) and providing power to the linkage member (32), and a second sludge pump (34) arranged at the top of the degradation box (20) and connected to the degradation box (20) and the extrusion member (31), respectively.

2. The sludge harmless degradation equipment according to claim 1 is characterized in that: The outer wall of the pretreatment box (10) is provided with a water inlet flange (100); the homogenizing plate (11) is provided with a plurality of through grooves (110), and the top of the homogenizing plate (11) is provided with two threaded seats (111) which respectively penetrate the pretreatment box (10) and are respectively slidably engaged with the pretreatment box (10); the top of the pretreatment box (10) is provided with two movable lead screws (13) which are rotatably engaged with the vertical plate (101); the two movable lead screws (13) are respectively threadedly connected to the two threaded seats (111) in a one-to-one correspondence, and the ends of the two movable lead screws (13) are both provided with small sprockets (130); the output end of the driving motor (12) is connected with a main sprocket (120), and the main sprocket (120) and the two small sprockets (130) are connected via a chain transmission; The upper end surface of the outer wall of the degradation box (20) is provided with a sewage discharge hopper (200), and the top end is provided with a dosing pipe (201); the input end of the first sludge pump (24) is connected to the lower end of the interior of the pretreatment box (10) through a conduit, and the output end of the first sludge pump (24) is connected to the upper end of the interior of the degradation box (20) through a conduit; The lower end of the outer wall of the dewatering box (30) is provided with a sludge discharge port (300) and a water discharge port (301); the input end of the second sludge pump (34) is connected to the lower end of the interior of the degradation box (20) through a conduit, and the output end of the second sludge pump (34) is connected to the interior of the extrusion member (31) through a conduit.

3. The sludge harmless degradation equipment according to claim 1 is characterized in that: A plurality of connecting shafts (14) are arranged in parallel in the middle of the homogenizing plate (11) in the upper and lower parts, each of the connecting shafts (14) being sleeved with a connecting gear (140) located inside the homogenizing plate (11), and a rotating net cylinder (141) is arranged at both ends of each connecting shaft (14); a crushing knife (142) is arranged on each rotating net cylinder (141), and a collecting trough (1410) is arranged on the rotating net cylinder (141) and at the connection between the crushing knife (142) and the rotating net cylinder (141); a collecting trough (1410) is arranged at the top of the homogenizing plate (11) and passes through the pretreatment box (10) and is connected to the pretreatment box (10). A follower seat (112) is slidably engaged with the processing box (10); a driving rack (15) is provided through the follower seat (112) and is slidably engaged with the inner wall of the homogenizing plate (11) and is meshedly connected with each of the connecting gears (140); an auxiliary motor (16) is provided on the follower seat (112); an eccentric rotating disk (160) is connected to the output end of the auxiliary motor (16); the eccentric rotating disk (160) and the top end of the driving rack (15) are movably hinged via a hinge rod (161); and a sealing door (17) is clamped on the outer wall of the pre-processing box (10).

4. The sludge harmless degradation equipment according to claim 2 is characterized in that: The salvage component (22) comprises a salvage frame (220), a porous plate assembly (221) movably arranged at the bottom of the salvage frame (220), and a second electric push rod (222) arranged inside the salvage frame (220) and providing power to the porous plate assembly (221); a transfer hole (2200) is arranged on the side wall of the salvage frame (220) at a position corresponding to the position of the sewage discharge bucket (200); a fixing plate (223) is arranged at the center of the bottom of the salvage frame (220); a threaded sleeve (2230) is arranged on the fixing plate (223); there are a plurality of porous plate assemblies (221) evenly distributed on both sides of the fixing plate (223); each porous plate assembly (221) is provided with a plurality of threads; The plate assembly (221) is composed of two movable porous plates (2210), the sides of the two movable porous plates (2210) close to each other are movably hinged via a T-shaped plate (2211), and the two movable porous plates (2210) located at the two ends are respectively slidably engaged with the inner side wall of the salvage frame (220); a pushing beam (2212) connected to each of the T-shaped plates (2211) is arranged inside the salvage frame (220); the second electric push rod (222) is connected to the bottom surface of the pushing beam (2212); and the output end of the lifting motor (23) is connected to a lifting screw (230) that penetrates the degradation box (20) and is threadedly connected to the threaded sleeve (2230).

5. The sludge harmless degradation equipment according to claim 4 is characterized in that: A scraper (25) is slidably engaged with the bottom of the degradation box (20), a U-shaped frame (250) connected to the scraper (25) is slidably engaged with the outer wall of the degradation box (20), and a third electric push rod (251) connected to the U-shaped frame (250) is arranged on the outer wall of the degradation box (20).

6. The sludge harmless degradation equipment according to claim 2 is characterized in that: The squeezing member (31) comprises two squeezing boxes (310) symmetrically arranged inside the dewatering box (30) and squeezing plates (311) movably connected to the two squeezing boxes (310) in a one-to-one correspondence; one end of the squeezing box (310) is open, and the other end is provided with a dewatering mesh plate (312); the open ends of the two squeezing boxes (310) are close to each other, and the two squeezing plates (311) are slidably connected to the open ends of the two squeezing boxes (310) in a one-to-one correspondence; the output end of the second sludge pump (34) is connected to the inside of the squeezing box (310) through a conduit.

7. The sludge harmless degradation equipment according to claim 6 is characterized in that: The linkage member (32) is arranged between the two extrusion plates (311), and the linkage member (32) comprises a rotating rod (320) and a pushing rod (321); two rotating rods (320) and two pushing rods (321) are provided, and the centers of the two rotating rods (320) are hinged to each other and are rotatably engaged with the inner wall of the dehydration box (30); the two pushing rods (321) are respectively located on both sides of the hinge points of the two rotating rods (320), and are respectively slidably engaged with the two rotating rods (320) in a one-to-one correspondence; the side walls of the two pushing rods (321) are provided with an extension seat (322) that penetrates the dehydration box (30) and is slidably engaged with the dehydration box (30); two first electric push rods (33) are provided, and the two first electric push rods (33) are respectively connected to the two extension seats (322) in a one-to-one correspondence.

8. The sludge harmless degradation equipment according to claim 7 is characterized in that: The ends of the two rotating rods (320) are both rotatably engaged with rollers (3200).

9. The sludge harmless degradation equipment according to claim 7, characterized in that: A plurality of the extrusion members (31) are provided, and each of the extrusion members (31) is arranged in parallel inside the dehydration box (30), and the number of the linkage members (32) corresponds to the number of the extrusion members (31); each of the extension seats (322) is connected via a sliding beam (323), and the first electric push rod (33) is connected to the sliding beam (323) at a corresponding position.

10. A method for harmless degradation of sludge, based on a device for harmless degradation of sludge according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, passing the sludge to be treated into the interior of the pretreatment box (10), and injecting clean water into the interior of the pretreatment box (10) to adjust the moisture content of the sludge to 45-55%; then using the driving motor (12) to drive the homogenizing plate (11) to move back and forth inside the pretreatment box (10), and using the homogenizing plate (11) to stir the sludge to improve the fluidity of the sludge; S2, using a first sludge pump (24) to guide the sludge in the pretreatment box (10) into the degradation box (20), injecting a microbial agent into the degradation box (20), and using an air dissolving tank (21) to inject flotation water into the sludge through an air dissolving nozzle (210), so that bubbles that move upward are generated in the sludge; The oily pollutants in the sludge are moved to the sludge liquid surface under the action of the bubbles, and the oily pollutants are salvaged and collected by using a salvaging component (22); The microbial agent diffuses into the sludge under the action of the air flotation water, and the hydrocarbon pollutants in the sludge are decomposed by the microbial agent; wherein the microbial agent is prepared by mixing Microbacterium phylloides, Pseudomonas putida, and Microbacterium stutzeri in a volume ratio of 1:1:2, and the dosage of the microbial agent is 0.005-0.009 mg / L; S3, injecting an oxidant into the degradation box (20), the oxidant diffuses into the sludge under the action of the flotation water, and oxidizes and decomposes the pollutants in the sludge; wherein the oxidant is hydrogen peroxide with a volume concentration of 15-20%, and the dosage of the oxidant is 0.01-0.04 ml / L; S4. Using the second sludge pump (34) to guide the sludge inside the degradation box (20) into the extrusion component (31), using the first electric push rod (33) to drive the linkage component (32), and using the linkage component (32) to cause the extrusion component (31) to move, thereby performing an extrusion and dehydration process on the sludge.

Images